Rust

Improve documentation for TableProvider #4143

Job	Run time
Check License Header	2m 21s
Check cargo fmt	43s
cargo check	13m 36s
build with wasm-pack	3m 20s
cargo test (macos)	13m 26s
cargo test (macos-aarch64)	13m 59s
Verify MSRV (Min Supported Rust Version)	9m 14s
Verify Vendored Code	51s
cargo test (win64)	1h 13m 10s
cargo test (amd64)	12m 10s
cargo test datafusion-cli (amd64)	4m 36s
clippy	7m 0s
cargo test hash collisions (amd64)	28m 23s
cargo doc	4m 35s
cargo test doc (amd64)	17m 33s
cargo examples (amd64)	14m 40s
Run sqllogictest with Postgres runner	4m 4s
cargo test pyarrow (amd64)	3m 3s
check Cargo.toml formatting	2m 54s
verify benchmark results (amd64)	14m 37s
check configs.md and ***_functions.md is up-to-date	3m 30s
	4h 7m 45s

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